6. Solve Inequalities by Addition or Subtraction
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Use the Subtraction Property of Inequality.
m ≤ 4.3
LHS-1.2≤RHS-1.2
Commutative Property of Addition
Subtract terms
We can check our solution by substituting a few values into the given inequality. The value satisfies the inequality if the inequality remains true after substituting and simplifying.
| m | 1.2 + m ≤ 5.5 | Simplify | True or False? |
|---|---|---|---|
| 4.2 | 1.2 + 4.2 ≤ 5.5 | 5.4 ≤ 5.5 | True |
| 4.3 | 1.2 + 4.3 ≤ 5.5 | 5.5 ≤ 5.5 | True |
| 4.4 | 1.2 + 4.4 ≤ 5.5 | 5.6 ≰ 5.5 | False |
We can conclude that as long as m is less than or equal to 4.3, the inequality is satisfied.